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SUMMARY:Recent advances in modelling sea ice - Michel Tsamados (University
  of Reading)
DTSTART:20130731T130000Z
DTEND:20130731T140000Z
UID:TALK46211@talks.cam.ac.uk
CONTACT:Dr Andrew Meijers
DESCRIPTION:Arctic sea ice after more than three decades of prolonged thin
 ning and shrinking has transformed radically. With this dramatic evolution
  comes the necessity to reevaluate the physical processes involving sea ic
 e and\, in particular\, the driving mechanisms that set the ice in motion 
 and redistribute its mass into and out of the Arctic basin. Sea ice dynami
 cs is dominated by three forces\, the atmospheric and oceanic drag and the
  internal forces in the ice. All are inadequately represented in current g
 eneral circulation models (GCMs). I present results over the Arctic of a s
 tand-alone version of the sea ice model\, CICE\, and show the influence of
  a new anisotropic rheology and a new drag parameterisation on the motion 
 and mass of the ice cover. The impact of this new physics on the Arctic se
 a ice properties is large and seems to explain some of the differences bet
 ween models and observations. I will also discuss some recent work where w
 e have tested the impact of our new physics on the sea ice characteristics
  in the Antarctic
LOCATION:British Antarctic Survey\, Room 330B
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